The sample of water had impurities. Impurities raise the boiling point.
raphael answered the question on February 1, 2017 at 05:14
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Date posted: January 31, 2017. Answers (1)
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Hydrated cobalt (II) chloride exists as pink crystals and anhydrous cobalt (II) chloride is a blue powder. Describe a laboratory experiment that can be used to show that the action of heat on hydrated cobalt (II) chloride is a reversible action.
Date posted: January 31, 2017. Answers (1)
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State and explain the change in mass that occurs when the following substances are separately heated in open crucibles.
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Date posted: January 31, 2017. Answers (1)
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The diagram below shows a Bunsen burner when in use.
Date posted: January 28, 2017. Answers (1)
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Date posted: January 28, 2017. Answers (1)
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Date posted: January 16, 2017. Answers (1)
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Define what a fuel is.
Date posted: January 16, 2017. Answers (1)
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Date posted: January 16, 2017. Answers (1)
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Date posted: January 16, 2017. Answers (1)
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Date posted: January 16, 2017. Answers (1)
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State observations made when excess hydrogen suphide gas is bubbled into copper (II) sulphate solution.
Date posted: January 16, 2017. Answers (1)
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A student attempted to prepare hydrogen sulphide gas and collected the gas over cold water. The student collected only a few bubbles of gas. Explain.
Date posted: January 16, 2017. Answers (1)
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Date posted: January 16, 2017. Answers (1)
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A form three student added sodium carbonate solution to a solution of aluminium chloride in water. A white precipitate was formed. The precipitate soon dissolved liberation a colourless gas.
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ii) Explain why the precipitate dissolves?
Date posted: January 16, 2017. Answers (1)
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Date posted: January 16, 2017. Answers (1)
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Date posted: January 16, 2017. Answers (1)
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Name a pair of suitable reagents that can be used to prepare nitrogen (II) oxide in the laboratory.
Date posted: January 16, 2017. Answers (1)
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State Graham's law.
Date posted: January 16, 2017. Answers (1)
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Name the two flames produced by a Bunsen burner and the conditions under which they are produced.
Date posted: January 16, 2017. Answers (1)
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What factors should be considered when choosing a fuel for cooking?
Date posted: January 14, 2017. Answers (1)